QTDragon MDI jogging strange - diagonals

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28 Feb 2023 08:12 #265535 by frayja2002
Hi all

I having some strange behaviour from the QTDragon MDI.

If i start QTDragon, home all axis & then use this sequence of commands I get something strange.

G0 X10
G0 Z100
G0 Y10
G0 Y100

The first commands work normally but when I enter the G0 Y10 the X axis also moves (back to X10). Each time I type a command after that the axis move diagonally.

I have tried the Axis screen & Gmoccapy & they both seem to work as expected.

I am using the latest build bot on Buster 10 - LINUXCNC - 2.10.0-pre0-928-gf1ce19ba4

Is there something I am missing here?
All help appreciated.

Thanks
Alex

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28 Feb 2023 13:50 #265562 by cmorley
Is this using the sim config or a real machine?
My test here on a sim works fine.

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28 Feb 2023 16:27 #265577 by persei8
Well this is peculiar. I can confirm the same behaviour as the OP describes on both my development version (which is technically a simulation) and the linuxcnc sample config (sim.qtdragon_hd.qtdragon_hd_xyz). However, my real machine, which has the exact same software as my development machine, works perfectly. I also confirmed that mdi_line.py wasn't submitting incorrect data to the ACTION.CALL_MDI command. I'm assuming the reference to Z100 in the OP's post was a typo and should be X100. Either way, it happens with Z moves too.
Jim

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28 Feb 2023 20:58 #265613 by frayja2002
Yes What you'r saying is correct it should have been an X.

I have tried this on an actual running machine and (after) on the XYZ sim.

Alex

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01 Mar 2023 02:30 #265629 by cmorley
I see it now.
i also you can get all three axis to move with:
g0 x something
g0 y something
g0 z something
then g0 any of them all three will move.

but if I jog X axis with the on screen buttons, then I can G0 X anywhere and only X will move.
But if I mdi another axis it will move both again.
The following user(s) said Thank You: tommylight

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01 Mar 2023 03:16 #265630 by JohnnyCNC
I'll give this a try on my machine tomorrow.

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01 Mar 2023 03:45 #265632 by cmorley
I have found the problem line of code.. working on the best solution.

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01 Mar 2023 04:04 #265633 by cmorley
In case your interested:
In mdi_line.py the display is reloaded when MDI commands are run.
During reloading the display, the task_plan_synch() is called, seemingly out of order.
Probably gets called before the MDI finishes, so old positions are used to update.
The following user(s) said Thank You: eduard

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01 Mar 2023 05:24 #265634 by cmorley
Ok I pushed a hopeful fix to 2.9 and master.
Please let me know if it fixes things for you.

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01 Mar 2023 08:05 #265637 by frayja2002
Hi there

As said in the initial post I'm using buildbot (2.10)
Should I be seeing an update. When I try to do an update it tells me all packages are up to date.

Will this normally come through prity quickly.

Thanks
Alex

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